Introduction to First Aid急救概念

First Aid define as emergency treatment given to the sick or injured.
急救是指在医护人员、救伤车未到之前，对伤病者初步的援助及护理。

Purpose of First Aid急救目的
- to preserve life保全生命
- to prevent further injury防止伤势恶化
- to promote recovery促进复原
- to protect the unconscious保护不省人事的伤病者

• Preserve life - yourself, casualty and bystanders
• Prevent further injury - do no more harm. Move the casualty only if it will be safer than leaving where they are.
• Promote recovery - help the casualty to breathe, stop bleeding, get skilled help and make the casualty more comfortable
• Protect the unconscious - they cannot help themselves. Therefore, ensure the airway is open, otherwise the casualty cant breath. Turn them into safer position on their side.

Diagnosis诊断
- History病历（事发的经过，例如旁观者叙述）
- Signs病症（伤病者的表现，例如肿胀、呻吟等）
- Symptoms病状（伤病者的感觉，例如疼痛、口渴等）